Electric-lamp holder



(No Model.)

M. P. MEYER.

ELEGTRIG LAMP HOLDER. No. 522,690. Patented July 10 1894.

UNITED STATES PATENT OFFICE.

MARTIN P. MEYER, OF ROCHESTER, NEW YORK.

ELECTRIC-LAMP HOLDER.

SPECIFICATION forming part of Letters Patent No. 522,690, dated July 10,1894.

Application filed February 27, 1894. Serial No. 501.683. (No model.)

To all whom it may concern.- I

Be it known that I, MARTIN P. MEYER,of Rochester,in the county of Monroeand State of New York, have invented certain new and useful Improvementsin Electric-Lamp Holders; and I do hereby declare the following to be afull,clear, and exact description of the same, reference being had tothe accompany 1ng drawings, forming a part of this specification, and tothe reference-numerals marked thereon.

My present invention has for its object to provide an improved holderfor electrip incandescent lamps, preferably embodying a lamp guard andshade or reflector, which is not only simple and cheap in construction,but one in which all the parts are insulated and protected so that thereis no danger of a person receiving an electric shock by coming incontact with the shade, guard or any other part of the device, and tothese and other ends the invention consists in certain improvements inconstruction and combinations of parts, all as will be hereinafter fullydescribed and the novel features pointed out in the claims at the end ofthis specification.

In the accompanying drawings:--Figure 1 is a view of one half of adivided, suspended fixture or socket, the shade and guard being shown insection; Fig. 2, a cross sectional view on the line 0c--:2c. Fig. 3 isan enlarged view of the switch and contacts.

Similar reference numerals indicate similar parts.

The main portion of the body or holder 1 is composed of wood, papiermach, glass or any suitable insulating material or composition, andpreferably formed in two parts, as shown in Fig. 2, one of said parts,or both if desired, being recessed for containing the switch and contactdevices, such as for instance shown in Fig. 1.

The two parts of the holder when placed together form a structuresubstantially circular at its lower end and provided with a threadedaperture or socket 2 into which the end of the electric lamp 3 isscrewed, or otherwise suitably removably held. Surrounding the centralsocket is a flange 4 on which is formed a thread and an annular shoulder5 is formed above said threaded portion.

6 indicates a guard constructed of Wire, or

there is no possibility of a person receiving it a shock from contactwith the shade, guard or the collar on the lamp, which renders thedevice particularly adapted for use in oflices or in shops where thelamps are handled by inexperienced and careless people.

The circuit controlling or switch devices for the 'fixture are locatedwithin a recess formed therein and may be of any suitable construction,but I prefer to use the one shown herein as I have found in practicethat it is simple,'cheap and the parts are readily assembled by anunskilledoperator. In one of the halves or portions of the part 1 isarranged a suitable recess, at one end of which is located a plate 10 towhich one of the circuit wires is attached, the other circuit wireconmeeting with a screw 11 arranged in the bottom of the socket for thelamp and adapted to connect with the button on the end of the lamp whenthe latter is secured in position. At the side of the socket for thelamp is arranged one end of a contact spring 12, the other endextendinginto the recess in thebody, as shown, said spring beingpreferably backed by one or more additional spring leaves, as shown, andrequiring no particular fastening device, the other part of the frame 1holding it in position when the two parts are secured together as shownin Fig. 2. The other contact 9 is preferably composed of one or morespring leaves with their ends between pins 13 on the plate 10, whiletheir other ends are held in a slight recess 14:, the middle portion ofsaid springs being normally out of contact with the end of the spring 12leading into the socket.

15 indicates a cam or block attached to the spindle or key 16 adapted tobe operated from the exterior of the casing; said cam when in theposition shown in full lines being held 9 and holding the switch open orclosed aswill be understood.

In assembling the parts, it is only necessary to slip the spring 12 intothe slot in the holder and the spring 9 between the pins 13 with its endin the recess 14, as shown, and

then connect the two halves of the holder by screws or suitablefastening devices.

It will be understood that when the lamp is screwedin the socket, thebutton on the end is in contact with the screw or stud 11 in the socket,while the ordinary collar connected with the other end of the carbonfilament is in contact with the end of the spring 12, at the side of thesocket.

I claim as my invention 1. The combination of the body or holder havingthe threaded socket for the lamp, the exterior thread and the shoulderabove it, all of said parts being formed of insulating material, of thelamp guard constructed of wire and having the threaded ring screwing onthe exterior thread of the holder, and the shade on the holder clampedbetween the shoulder thereon and the ring to which the guard isattached, substantially as described.

' 2. The combination with the body or holder constructed of insulatingmaterial, and di vided longitudinally into two parts, and a suitableswitch contained in one of them, said holder having the socket for thelamp, and the screw-thread and shoulder, of the lamp guard having thethreaded ring screwing on the holder and the shade held between the ringand shoulder, substantially as described.

3. In a lamp holder, the combination with the body composed ofinsulating material formed with the threaded lamp socket having therecess in the side through the threaded portion, the contact at thebottom of said socket, and the interior chamber in the body, of thecontact spring extending from the 1nterior chamber into the recess inthe side of the socket, and the switch and contact in the chamberco-operating with the spring, whereby when the lamp is screwed in thesocket it will engage the spring at the side and make a good contacttherewith, and the switch may be operated independently of the contactbetween the lamp and spring, substantially as described.

4. In a lamp-holder, the combination with W the body composed ofinsulating material formed with the threaded lamp socket having therecess in the side through the threaded portion, of the contact springextending lnto the recess in the side of the socket and co-opcratingwith the side of the lamp, whereby when the lamp is screwed in thesocket it will engage the spring and make a good contact therewith,substantially as described.

5. The combination with the holder having the lamp socket and made intwo parts of insulating material, one of said parts havinga chamber, thecontact spring connected to a line terminal loosely arranged therein andthe operating cam, of the contact spring extending into the chamber andco-operatlng with the other spring and also extending into the lampsocket, said springs being held in place by the cover piece of theholder, substantially as described.

, MARTIN P. MEYER.

. Witnesses:

FREDERICK F. CHURCH, G. A. RoDo.

